Car-bolster



( No Model.)

H. JAMES.

GAB, BOLSTER. No. 374,836.

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Patented Dec. 13, 1887,

UNITED STATES PATENT OFFICE.

HENEY JAMES, OF CLEVELAND, OHIO.

CAR-BOLSTER.

SPECIFICATION forming part of Letters Patent No. 374,836. dated December 13, 1887.

- Application filed April 25, 1887.

To all whom it may concern:

Be it known that I, HENRY JAMES, of Cleveland, in the county of Ouyahoga and State of Ohio,have invented certain new and useful Improvements in Oar-Bolsters; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention 'relates to improvements in bolsters for railway-cars in which bolsters are made of metal plates set ed gewise and between wooden beams, the plates and beams being bolted 0r riveted through and through,with a pivotal bearing arranged at the center of the bolster to support the weight of the canto the end that the trucks turn easily when passing around curves, and consequently cause little friction and wear on the wheel-flanges.

In the accompanying drawings, Figure 1 is a side elevation of my improved bolster. Fig. 2 is a plan view. Fig. 3 is an enlarged elevation, partlyin transverse section.

A represents heavy metal plates, usually of steel, the same being set edgewise between the timbers or beams B, and bolted or riveted through and through, as shown. At the center of the lower bolster and on the top side thereof is secured a heavy plate,G, the central portion of which has a raised or crowning surface, c. This crowning surface fits into a corresponding concax'ed face of the plate D, the latter being secured in a central position to Serial No. 236,029. (No model.)

the under side of the upper bolster, as shown. These two plates form a pivotal bearing, by 5 means of which the lower bolster, that is secured to the truck in the usual manner, may turn easily in passing around curves. The upper boslter is of course secured to the body of the car. With this construction of bolsters 0 the latter are of ample strength to support the weight of the car in the manner shown.

E are side bearings, arranged in position substantially as shown. These side bearings have a slight clearance and only occasionally 5 engage each other in holding the car from rocking, and do not interfere materially with the turning of the bolsters on the pivotal bearings aforesaid. The kingbolt H could fit loosely, so as not to clamp with the slight rock- 50 ing movement of the car allowed by the clearance of the plate E.

What I claim is- Car-bolsters consisting respectively of metal plates set edgewise between wooden beams, 5 5 said plates and beams being riveted or bolted through and through,with pivotal bearings arranged at the center of. the bolsters, substantially as and for the purpose set forth.

Intestimonywhereof I sign this specification, 60 in the presence of two witnesses, this 5th day of March, 1887.

HENRY JAMES.

Witnesses:

GEORGE ORANDTT,

/- CHAS. H. DORER. 

